Damion,
Please don't copy my presonal mailbox with postings to this list. I
routinely throw them away without reading.
See ntp-dev/libntp/systime.c line 85.
Dave
Damion de Soto wrote:
Hi Guys,
Brian Utterback wrote:
I think that this is Damion's point. If you look at the code itself,
the fuzz code is not used if:
1. You are using clock_gettime.
or
2. You are using getclock
or
3. You are using the simulator.
So, the fact that the simulator is doing okay is irrelevant, since it
does not use the fuzz code. But more to the point, the clock_gettime
and getclock functions claim to return nanoseconds, so there are only two
bits available to fuzz, so the code does not bother to fuzz those last
two bits. Damion's point is that the actual precision of the clock
on his system is much more coarse, so more bits are really
non-significant and should be fuzzed, but they are not.
I have just disabled the use of clock_gettime() and am still not seeing
any bit randomization/fuzz. (Athough I'm sure I saw some yesterday....)
Where exactly is the code to fuzz the gettimeofday() value?
I can't find anything obvious.
Thanks,
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